Sheet-metal radiator.



` PATENTED APR. 18, 1905.

W. R. KINNEAR.

SHEET METAL RADIATOR.

APPLIUATION-IILED DEO.21, 1903.

2 SHEBTS-SHBET 1.

PATENTED APR. 18', 1905.

W. R. KINNEAR.

SHEET METAL RADIATOR.

APPLICATION FILED DEU.21, 1903.

2 SHEETS-SHEET 2.

@Montags No. 787,s45.

Patented April 18, 1905.

UNTTED STATES PATENT UFFICI-3.

WlLLlAM R. KINNEAR, OF N EW YORK, N. Y.

SHEET-METAL RADlATOR.

SPECIFICATION forming part of Letters Patent No. 787,845, dated April 18, 1905.

Application filed December 21,1903. Serial No. 186,033.

closures the thimble has soldered within it a Be it known that l, lVrLLLiu R. KINNnir.. a l nut (5 and is covered by a cap T, held in place citizen of the United States, and a resident ot' g the borough ot' lllanhattan, in the city and State et' New York, have invented certain new and uset'ul Improvements in Sheet-Metal Radiators, ot' which the following is a specili ration.

My invention relates more especially to sheet-metal radiators ot that type in which a central air-flue is surrounded by a chamber lor the circulating or heat-conveying medium;

and it consists in certain novel vfeatures oi' construction to be hereinafter t'ully described, and particularly pointed out in the claims, ret'- erence being had to the accompanying drawings, in which--- Figure l is a vertical longitudinal section through a radiator composed ot a plurality otunits constructed in accordance with my present invention. Fig. l" is a detail view etl a modilied construction ot' a part shown in Fig. l. Fig. 2 is a horizontal section throughone unit. Fig. il is an elevation of a part ot' one unit on an enlarged scale, and Fig. Je is a detail view ot' the blank thimble for closing openings in the radiator.

l represents the air-tlue, and Q the chambers Vfor the circulating medium in each unit of the ri'uliator.

'.l`he chambers 2 are connected by struck-up bosses 3, united by a seam, and the adjacent units of the radiator are connected bysimilar seanied bosses i, all otl which bosses are pret'- erably constructed with inwardly-projecting radial tlanges, which are united to form the seams.

ln steam-radiators it is desirable to have no connection between the upper ends ot' adjacentunits. Oneteatureotmyinvention theretore consists in providing a closure for the openings which occur in the construction above described, such closure consisting ot' a thimhle 5, having cylindrical walls and a closed end litting within the opening to be closed and expanded on opposite sides thereof, its open end forced lirnily ag'ainst the tlange ot' the opening. This closure also serves to close the upper end openings otl the radiator, and in order to provide a neat linish for such end by a screw S, passing through thc cap and entering the nut.

Sheet-metal radiators have a tendency to expand under internal pressure. Hence another 'feature of my invention consists in depressing the l'lat sides ol' the units to form stitfening-panels 9 and in t'urther depressing the lowest portion ot' said panels to Vform bosses l0, which abut against the inner walls ot' the unit, said bosses and inner walls being tied together by open thimbles l2, as shown in Figs. l and L), the metal of the boss being expanded into locking relations with the inner i wall in the former case, but this additional l lock being omltted 1n the lattell case.

Double tubular radiator units have heretofore been formed by inner and outer complete tubes. Vlt is zulvantageous, however, under some circumstances to divide these tubes into two parts each and instead of uniting them into tubes to connect the respective halves on each side, so as to t'orn'i two identical unit members each provided with its own chamber 2 and forming between them the air- Vllue l when they are brought together. Such a construction is shown in Fig. Q.

The in'ner and outer walls are preferably united along their vertical edges by outwardly-projecting seams 13, and the two members are held together by a dovetail hinding-strip li, also by the circulating-passages 3, already described, which connect the circulating-chamber in one member with that of the other and extend across the air-flue.

The several features above described cooperate to form a radiator unit ot' superior construction.

llaving thus described my invention, what l claim isl. A sheet-metal radiator comprising a plurality ot' units constructed ot' sheet metal, open bosses extemling from the outer walls ot' the units and connecting adjacent units; inwardly-projecting radial tlanges in the openings between the units, thimbles closing the passages between the units, having an open side, the metal of said thimbles extending on opposite sides of the inwardly projecting' anges and covering-caps provided on the open sides of the thimbles in the end bosses.

2. A sheet-metal radiator unit constructed of two symmetrical halves abutting along their vertical edges and having their abutting sides concave between said vertical edges and separated at top and bottom so as to form a vertical air-lue through the unit; each of said halves being constructed of two sheets of metal united completely around their edges but spaced apart between their edges to form a chamber for the reception of a heating medium.

3. 1n combination with a radiator having an opening therein, a closure for said opening comprising a thimble havinga closed end, inserted in said opening and expanded on opposite sides of the opening to hold it in place therein and a cap covering the open end of said thinnble, a nut secured to the inner face of the closed end of the thimble, and a bolt securing the cap to said nut.

4. In a sheet-metal radiator unit, a wall depressed inwardly to form a stitfening-panel, an opposed wall, a portion of the depressed panel being pressed still further inwardlyl into abutment with the opposed wall, and suitable connections between the opposed wall and the abutting portion of the depressed panel to prevent expanding of the walls under internal pressure.

5. A sheet-metal radiator unit having one of two opposed walls depressed to form a longitudinal stifening-panel, with a space between said panel and the other opposed wall, and having a boss depressed from said panel into abutment with said other opposed wall, and a thimble passing through the parts and uniting them.

6. A sheet-metal radiator unit constructed of inner and outer tubes with a central airspace; the outer tubes beingdepressed to form stifening-panels, and having portions of said panels depressed to form bosses abutting against the inner tubes of the unit, andthim-A bles passing through the bosses and inner tubes and tying said parts together.

7. A sheet-metal radiator unit constructed of two symmetrical halves united along their vertical edges, spaced apartbetween said edges and separated at top and bottom so as to form a vertical air-flue through the unit; each of said halves being constructed of two sheets of metal united completely around their edges, but spaced apart between their edges to form achamber forthe reception of the heating medium.

8. A sheet-metal radiator unit constructed of two symmetrical halves united along their vertical edges, spaced apart between said edges and separated at top and bottom so as to form a vertical air-Hue through the unit; each of said halves being constructed of two sheets of metal united completely around their edges, but spaced apart between their edges to form a chamber for thefreception of the heating medium, the inner walls of the respective halves being connected by struck-up open bosses to form a circulating-passage between the halves.

9. A sheet-metal radiator comprising a plurality of units each constructed of two symmetrical halves united along their vertical edges, spaced apart between said edges and separated at top and bottom so as to form a vertical air-flue through the unit; each of said halves being constructed of two sheets of metal united completely around their edges, but spaced apart between their edges to form a chamber for the reception of the heating medium, the inner walls of the respective halves being connected by struck-up open bosses to form a circulatingpassage between the halves and the outer walls of said halves being also provided with struck-up open bosses, and the opposed outer bosses thus formed being suitably united to connect the units of the radiator together.

l0. A sheet-metal radiator Jformed of two members each comprising inner and outer walls with a chamber between them and united by seams along their edges to close said chamber; said members being connected along their vertical edges, by clamping-strips engaging the seams thereof, to form an air-flue between the members.

11. A sheet-metal radiator unit comprising two members each formed of vinner and outer walls united along their edges to form a chamber for the circulating medium and having the vertical edges of the members connected to form an air-flue between the members; the opposed inner walls of said members being connected at upper and lower points by circulating-passages between the chambers; and the inner and outer walls of each member being IOO brought into abutment and suitably tied together at points between said upper and lower circulating-passages.

12. A sheet-metal radiator comprising two chambers each formed Aby an inner wall and an outer wall suitably connected along their vertical edges by outwardly-projecting seams, and binding-strips having flanges engaging behind the adjacent seams of the respective members, holding the members together and closing the air-flue formed between them.

The foregoingspecification signed this 15th day of December, 1903.

VILLIAM R. KINNEAR.

In presence of-- RAYMOND H. KINNEAR, CLARENCE DE W. ROGERS.

IIO 

